Deaeration head mechanism of thermal deaerator

Abstract

The invention relates to the field of water deaerator equipment, and discloses a deaeration head mechanism of a thermal deaerator, which comprises a box body, the top of the box body is provided with a sealing cover, the top of the sealing cover is provided with an exhaust pipe orifice, the top and the bottom of an inner cavity of the box body are respectively provided with a lower sealing plate and an upper sealing plate, an outer pipe body and a heat exchange flow guide pipe are arranged between the lower sealing plate and the upper sealing plate, and the heat exchange flow guide pipe is arranged in the outer pipe body. Through the structural design of the outer pipe body and the heat exchange flow guide pipe in the middle of the inner cavity of the box body, water to be deaerated is introduced from bottom to top through the heat exchange flow guide pipe, water vapor is introduced from top to bottom through the outer pipe body, and hot water in the heat exchange flow guide pipe is secondarily preheated through the water vapor which enters the box body and is used for deaerating, the heat loss in the process that heated water is introduced into the box body is compensated, it is ensured that when the water to be deaerated makes contact with water vapor on the outer side of the outer pipe body for deaerating, the temperature is kept in a high state, and then the deaerating effect and efficiency are improved.

Description

technical field [0001] The invention relates to the field of water deaerator equipment, in particular to a deoxygenation head mechanism of a thermal deaerator. Background technique [0002] Thermal deaerator is a kind of equipment that uses water heat to remove oxygen in water to ensure the quality of water supply and prevent the dissolved oxygen in water supply from corroding water supply pipes, economizers and other auxiliary equipment in contact with water, resulting in The problem of equipment failure loss and water pollution is widely used in power system boilers, industrial boiler feed water and thermal power plant supply water. The deaerator head is the main deaerator mechanism of the thermal deaerator. [0003] Hot water and water vapor are fed into the existing oxygen removal head at the same time, and the water vapor is used to contact the hot water in the oxygen removal head. While heating, the partial pressure of the water vapor on the water surface in the oxygen...

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Problems solved by technology

[0004] However, in the existing deaeration head, the water vapor is directly introduced from the bottom, and the hot water is introduced from the top. In the process of passing the hot water into the deaeration head, there is a certain amount of heat loss. The steam is directional reheated to the saturation temperature corresponding to the internal pressure of the oxygen removal head, which reduces the oxygen removal process in which the water vapor contacts with water, which affects the efficiency and effect of oxygen removal. The water grate and packing layer are fixed in the oxygen removal head as a whole, and the packing layer will be replaced later, which will affect the subsequent water quality, and then affect the subsequent water deoxygenation effect.

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